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8132723: Add tests which check that soft references to humongous objects should work correctly

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8132724: Add tests which check that weak references to humongous objects should work correctly

Reviewed-by: jmasa, dfazunen
This commit is contained in:
Kirill Zhaldybin 2015-12-17 16:46:41 +03:00
parent a22ed33318
commit 772ddb7a4f
2 changed files with 222 additions and 1 deletions
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16
hotspot/src/share/vm/prims/whitebox.cpp
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@ -309,6 +309,18 @@ WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
return hr->is_humongous();
WB_END
WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
G1CollectedHeap* g1 = G1CollectedHeap::heap();
const HeapRegion* hr = g1->heap_region_containing((void*) addr);
return hr->is_humongous();
WB_END
WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
G1CollectedHeap* g1 = G1CollectedHeap::heap();
const HeapRegion* hr = g1->heap_region_containing((void*) addr);
return hr->is_free();
WB_END
WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
G1CollectedHeap* g1 = G1CollectedHeap::heap();
size_t nr = g1->max_regions();
@ -1478,7 +1490,9 @@ static JNINativeMethod methods[] = {
{CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
#if INCLUDE_ALL_GCS
{CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
{CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
{CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z",(void*)&WB_G1IsHumongous },
{CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
{CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
{CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
{CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
{CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },